feat(i18n): add error messages for agent operations

Add error messages for agent get/list operations and restructure accessible paths validation messages

src/renderer/src/i18n/locales/en-us.json

@@ -20,13 +20,25 @@
     "edit": {
       "title": "Edit Agent"
     },
+    "get": {
+      "error": {
+        "failed": "Failed to get the agent."
+      }
+    },
+    "list": {
+      "error": {
+        "failed": "Failed to list agents."
+      }
+    },
     "session": {
       "accessible_paths": {
         "add": "Add directory",
         "duplicate": "This directory is already included.",
         "empty": "Select at least one directory that the agent can access.",
+        "error": {
+          "at_least_one": "Please select at least one accessible directory."
+        },
         "label": "Accessible directories",
-        "required": "Please select at least one accessible directory.",
         "select_failed": "Failed to select directory."
       },
       "add": {

src/renderer/src/i18n/locales/zh-cn.json

@@ -20,13 +20,25 @@
     "edit": {
       "title": "编辑 Agent"
     },
+    "get": {
+      "error": {
+        "failed": "获取智能体失败"
+      }
+    },
+    "list": {
+      "error": {
+        "failed": "获取智能体列表失败"
+      }
+    },
     "session": {
       "accessible_paths": {
         "add": "添加目录",
         "duplicate": "该目录已添加。",
         "empty": "请选择至少一个智能体可访问的目录。",
+        "error": {
+          "at_least_one": "请至少选择一个可访问的目录"
+        },
         "label": "工作目录",
-        "required": "请至少选择一个可访问的目录。",
         "select_failed": "选择目录失败"
       },
       "add": {

src/renderer/src/i18n/locales/zh-tw.json

@@ -20,13 +20,25 @@
     "edit": {
       "title": "編輯 Agent"
     },
+    "get": {
+      "error": {
+        "failed": "[to be translated]:Failed to get the agent."
+      }
+    },
+    "list": {
+      "error": {
+        "failed": "[to be translated]:Failed to list agents."
+      }
+    },
     "session": {
       "accessible_paths": {
         "add": "新增目錄",
         "duplicate": "此目錄已包含在內。",
         "empty": "選擇至少一個代理可以存取的目錄。",
+        "error": {
+          "at_least_one": "[to be translated]:Please select at least one accessible directory."
+        },
         "label": "可存取的目錄",
-        "required": "請至少選擇一個可存取的目錄。",
         "select_failed": "無法選擇目錄。"
       },
       "add": {

src/renderer/src/i18n/translate/el-gr.json

@@ -20,13 +20,25 @@
     "edit": {
       "title": "Επεξεργαστής Agent"
     },
+    "get": {
+      "error": {
+        "failed": "[to be translated]:Failed to get the agent."
+      }
+    },
+    "list": {
+      "error": {
+        "failed": "[to be translated]:Failed to list agents."
+      }
+    },
     "session": {
       "accessible_paths": {
         "add": "Προσθήκη καταλόγου",
         "duplicate": "Αυτός ο κατάλογος έχει ήδη συμπεριληφθεί.",
         "empty": "Επιλέξτε τουλάχιστον έναν κατάλογο στον οποίο ο πράκτορας μπορεί να έχει πρόσβαση.",
+        "error": {
+          "at_least_one": "[to be translated]:Please select at least one accessible directory."
+        },
         "label": "Προσβάσιμοι κατάλογοι",
-        "required": "Παρακαλώ επιλέξτε τουλάχιστον έναν προσβάσιμο κατάλογο.",
         "select_failed": "Αποτυχία επιλογής καταλόγου."
       },
       "add": {

src/renderer/src/i18n/translate/es-es.json

@@ -20,13 +20,25 @@
     "edit": {
       "title": "Agent de edición"
     },
+    "get": {
+      "error": {
+        "failed": "[to be translated]:Failed to get the agent."
+      }
+    },
+    "list": {
+      "error": {
+        "failed": "[to be translated]:Failed to list agents."
+      }
+    },
     "session": {
       "accessible_paths": {
         "add": "Agregar directorio",
         "duplicate": "Este directorio ya está incluido.",
         "empty": "Selecciona al menos un directorio al que el agente pueda acceder.",
+        "error": {
+          "at_least_one": "[to be translated]:Please select at least one accessible directory."
+        },
         "label": "Directorios accesibles",
-        "required": "Por favor, seleccione al menos un directorio accesible.",
         "select_failed": "Error al seleccionar el directorio."
       },
       "add": {

src/renderer/src/i18n/translate/fr-fr.json

@@ -20,13 +20,25 @@
     "edit": {
       "title": "Éditer Agent"
     },
+    "get": {
+      "error": {
+        "failed": "[to be translated]:Failed to get the agent."
+      }
+    },
+    "list": {
+      "error": {
+        "failed": "[to be translated]:Failed to list agents."
+      }
+    },
     "session": {
       "accessible_paths": {
         "add": "Ajouter un répertoire",
         "duplicate": "Ce répertoire est déjà inclus.",
         "empty": "Sélectionnez au moins un répertoire auquel l'agent peut accéder.",
+        "error": {
+          "at_least_one": "[to be translated]:Please select at least one accessible directory."
+        },
         "label": "Répertoires accessibles",
-        "required": "Veuillez sélectionner au moins un répertoire accessible.",
         "select_failed": "Échec de la sélection du répertoire."
       },
       "add": {

src/renderer/src/i18n/translate/ja-jp.json

@@ -20,13 +20,25 @@
     "edit": {
       "title": "編集エージェント"
     },
+    "get": {
+      "error": {
+        "failed": "[to be translated]:Failed to get the agent."
+      }
+    },
+    "list": {
+      "error": {
+        "failed": "[to be translated]:Failed to list agents."
+      }
+    },
     "session": {
       "accessible_paths": {
         "add": "ディレクトリを追加",
         "duplicate": "このディレクトリは既に含まれています。",
         "empty": "エージェントがアクセスできるディレクトリを少なくとも1つ選択してください。",
+        "error": {
+          "at_least_one": "[to be translated]:Please select at least one accessible directory."
+        },
         "label": "アクセス可能なディレクトリ",
-        "required": "アクセス可能なディレクトリを少なくとも1つ選択してください。",
         "select_failed": "ディレクトリの選択に失敗しました。"
       },
       "add": {

src/renderer/src/i18n/translate/pt-pt.json

@@ -20,13 +20,25 @@
     "edit": {
       "title": "Agent Editor"
     },
+    "get": {
+      "error": {
+        "failed": "[to be translated]:Failed to get the agent."
+      }
+    },
+    "list": {
+      "error": {
+        "failed": "[to be translated]:Failed to list agents."
+      }
+    },
     "session": {
       "accessible_paths": {
         "add": "Adicionar diretório",
         "duplicate": "Este diretório já está incluído.",
         "empty": "Selecione pelo menos um diretório ao qual o agente possa acessar.",
+        "error": {
+          "at_least_one": "[to be translated]:Please select at least one accessible directory."
+        },
         "label": "Diretórios acessíveis",
-        "required": "Por favor, selecione pelo menos um diretório acessível.",
         "select_failed": "Falha ao selecionar o diretório."
       },
       "add": {

src/renderer/src/i18n/translate/ru-ru.json

@@ -20,13 +20,25 @@
     "edit": {
       "title": "Редактировать агент"
     },
+    "get": {
+      "error": {
+        "failed": "[to be translated]:Failed to get the agent."
+      }
+    },
+    "list": {
+      "error": {
+        "failed": "[to be translated]:Failed to list agents."
+      }
+    },
     "session": {
       "accessible_paths": {
         "add": "Добавить каталог",
         "duplicate": "Этот каталог уже включён.",
         "empty": "Выберите хотя бы один каталог, к которому агент имеет доступ.",
+        "error": {
+          "at_least_one": "[to be translated]:Please select at least one accessible directory."
+        },
         "label": "Доступные директории",
-        "required": "Пожалуйста, выберите хотя бы один доступный каталог.",
         "select_failed": "Не удалось выбрать каталог."
       },
       "add": {